31642213436 has 24 divisors (see below), whose sum is σ = 55582009056. Its totient is φ = 15761700800.

The previous prime is 31642213411. The next prime is 31642213451. The reversal of 31642213436 is 63431224613.

It is a super-2 number, since 2×31642213436² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31642213396 and 31642213405.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2403905 + ... + 2417031.

It is an arithmetic number, because the mean of its divisors is an integer number (2315917044).

Almost surely, 2^31642213436 is an apocalyptic number.

It is an amenable number.

31642213436 is a deficient number, since it is larger than the sum of its proper divisors (23939795620).

31642213436 is a wasteful number, since it uses less digits than its factorization.

31642213436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15349 (or 15347 counting only the distinct ones).

The product of its digits is 62208, while the sum is 35.

The spelling of 31642213436 in words is "thirty-one billion, six hundred forty-two million, two hundred thirteen thousand, four hundred thirty-six".